# com.jpyc-service/ec-storefront

JPYC (JPY stablecoin) EC platform MCP: product search, x402 gasless checkout, order status.

- **Type:** MCP server
- **Trust:** 60/100 (B), scored on the content rubric
- **Verification:** community-indexed — nobody has claimed this listing
- **Version:** 0.1.0
- **Author:** com.jpyc-service
- **License:** Unknown
- **Endpoints:** streamable-http https://ec.jpyc-service.com/mcp
- **Source:** https://ec.jpyc-service.com
- **Endpoint health:** reachable (last checked 2026-09-13T05:23:17.651Z, 4 samples) — uptime is not a security property and is not part of the trust score
- **Compatible clients:** claude-code, cursor, copilot, chatgpt, gemini (basis: transport)

## Trust

60/100 (B), scored on the content rubric
- Publisher verified: no
- Install scripts: nothing suspicious found
- Prompt-injection scan: clean
- Obfuscation scan: clean
- Evidence age: 0 days

## Security scan

- **Status:** clean
- **Scanned:** 2026-09-13T05:23:17.651Z
- **Version scanned:** live
- **CVEs:** no coverage — this entry has no package coordinates to query OSV against, so "no known CVEs" is NOT asserted for it.

## Tools

9 declared. Observed from a live `tools/list` probe.
- `list_shops` — JPYC EC Platform に出店している公開ショップの一覧を返す。減農薬の農産物・地酒・伝統工芸品など、生産者から直接買えるショップが中心。各ショップの name / slug / 説明 / 対応チェーン / 商品点数を含む。商品を探す起点として最初に呼ぶとよい。
- `get_shop` — 1 つのショップ（生産者・職人）の詳細を slug で取得する。ショップのストーリーや説明、対応ブロックチェーン、x402 決済が有効かどうかを返す。
- `list_products_in_shop` — 1 つのショップの公開中の商品をすべて返す。価格（JPYC 建て）・在庫・バリエーション・配送要否・対応チェーンを含む。list_shops でショップを見つけたあと、その品揃えを見るのに使う。
- `get_product` — 1 つの商品の詳細を product_id で取得する。価格（JPYC 建て）・在庫・SKU・バリエーション・配送要否・対応チェーンを返す。購入の前に必ず呼んで、requires_shipping（配送先が必要か）と has_variants（オプション選択が必要か）を確認すること。
- `search_products` — JPYC EC Platform 上の公開商品を横断検索する。減農薬米・地酒・伝統工芸品など、生産者から直接 JPYC で購入できる商品が対象。text は自然言語のキーワード（例: 『丹波 米』）で、商品名と説明に部分一致する。category / tag（産地・認証種別など）、価格帯（min_price / max
- `quote_checkout` — カートの内容で x402 チェックアウトの 1 回目を実行する。在庫を仮押さえし（有効期限は返り値 expires_at_unix_ms）、小計・割引・送料・合計（JPYC）と reservation_id、および PAYMENT-REQUIRED チャレンジ（base64url、x402 accepts 配列）を返す
- `authorize_transfer` — erc20-transfer 方式だけで、JPYC を送金する前に必ず呼ぶ。quote_checkout の選択した accept にある extra.payerAuthorization.message をウォレットで personal_sign し、その署名と reservation_id を渡す。サーバは EOA
- `submit_payment` — quote_checkout で得た reservation_id と、エージェントが用意した x402 PaymentPayload（base64url）を渡して決済を確定する。quote_checkout の accepts から選んだ方式に応じて payload の中身が変わる: 『eip3009』なら { si
- `get_order_status` — ウォレットアドレスの注文履歴を新しい順で返す。x402 で購入した注文は即時に order_status=3（決済完了）となり tx_hash を持つ。

## Install

**Verdict: review** — Installable, but 2 things to check first: No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
**Cautions** (coverage gaps and advisories — never blocking)
- No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
- No publisher has proved control of this listing; it is indexed, not vouched for.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"ec-storefront\": {\n      \"type\": \"http\",\n      \"url\": \"https://ec.jpyc-service.com/mcp\"\n    }\n  }\n}"
```

## Blast radius

Contained to moderate — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: runs on someone else's infrastructure; read-only tool surface.
- Floor 9, ceiling 27 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/com.jpyc-service%2Fec-storefront
- Install plan: https://forgeregistry.com/api/v1/packages/com.jpyc-service%2Fec-storefront/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/com.jpyc-service%2Fec-storefront
- HTML page: https://forgeregistry.com/registry/com.jpyc-service%2Fec-storefront
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.